Answer this question truthfully
### Question: What causes (condition)?
### Response: Simple causes of knee pain often clear up on their own with self care. Being overweight can put you at greater risk for knee problems.
Knee pain can be caused by:
Anterior knee pain Arthritis -- including rheumatoid arthritis, osteoarthritis, and gout Baker's cyst -- a fluid-filled swelling behind the knee that may occur with swelling (inflammation) from other causes, like arthritis Bursitis -- inflammation from repeated pressure on the knee, such as kneeling for long periods of time, overuse, or injury Connective tissue disorders such as lupus Dislocation of the kneecap Iliotibial band syndrome -- a hip disorder from injury to the thick band that runs from your hip to the outside of your knee Infection in the joint Knee injuries -- an anterior cruciate ligament injury or medial collateral ligament injury may cause bleeding into your knee, which makes the pain worse Osgood-Schlatter disease Tendinitis -- a pain in the front of your knee that gets worse when going up and down stairs or inclines Torn cartilage (a meniscus tear) -- pain felt on the inside or outside of the knee joint Torn ligament (ACL tear) -- leads to pain and instability of the knee Strain or sprain -- minor injuries to the ligaments caused by sudden or unnatural twisting Less common conditions that can lead to knee pain include bone tumors.